สถิติ
เปิดเมื่อ28/01/2015
อัพเดท11/01/2022
ผู้เข้าชม609866
แสดงหน้า770651
ปฎิทิน
January 2022
Sun Mon Tue Wed Thu Fri Sat
      
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
     
สมาชิก

สมัครสมาชิก | ลืมรหัสผ่าน

ทังสเตนคาร์ไบด์

อ่าน 40385 | ตอบ 1191
ทังสเตนคาร์ไบด์
       ทังสเตนคาร์ไบด์ (อังกฤษ: tungsten carbide) มีสูตรเคมีคือ WC ในรูปพื้นฐานจะมีลักษณะเป็นผงสีเทาละเอียด มี 2 โครงสร้างคือแบบหกเหลี่ยม (α-WC) และแบบลูกบาศก์ (β-WC)
 
       ทังสเตนคาร์ไบด์เตรียมได้จากการทำปฏิกิริยาระหว่างทังสเตนกับคาร์บอนที่อุณหภูมิ 1400–2000 °C[3] หรือให้ความร้อนกับทังสเตนไตรออกไซด์และแกรไฟต์โดยตรงที่ 900 °C หรือในแก๊สไฮโดรเจนที่ 670 °C ตามด้วยการคาร์บิวไรเซชันในแก๊สอาร์กอนที่ 1000 °C[4] หรือใช้วิธีการเคลือบด้วยไอเคมี เช่น
  • ทำปฏิกิริยาระหว่างทังสเตนเฮกซะคลอไรด์กับไฮโดรเจนและมีเทนที่อุณหภูมิ 670 °C (1,238 °F)
 WCl6 + H2 + CH4 WC + 6 HCl
  • ทำปฏิกิริยาระหว่างทังสเตนเฮกซะฟลูออไรด์กับไฮโดรเจนและเมทานอลที่อุณหภูมิ 350 °C (662 °F)
                WF6 + 2 H2 + CH3OH → WC + 6 HF + H2O
       ทังสเตนคาร์ไบด์มีจุดหลอมเหลวที่ 2,870 °C (5,200 °F) และจุดเดือดที่ 6,000 °C (10,830 °F) มีความแข็งระดับ 9 ตามมาตราโมสและประมาณ 2600 ตามมาตราวิกเคอส์[5] ทังสเตนคาร์ไบด์มีความแข็งเกร็งมากกว่าเหล็กกล้าประมาณ 2 เท่า มีค่ามอดุลัสของยังประมาณ 530–700 GPa (77,000–102,000 ksi)[2][6][5][7] โมดูลัสของแรงบีบอัด 630–655 GPa และโมดูลัสของแรงเฉือน 274 GPa[8]
 
ด้วยคุณสมบัติความแข็งและทนความร้อนสูง ทังสเตนคาร์ไบด์จึงใช้ทำเป็นเครื่องมือตัดหรือหัวเจาะ ใช้ทำกระสุนเจาะเกราะ เครื่องมือผ่าตัด อุปกรณ์กีฬา เครื่องประดับและอื่น ๆ
 
 
 
 
 
 
 
 
 
 
อ้างอิง
 
  1. Kurlov, p. 22
  2. Blau, Peter J. (2003). Wear of Materials. Elsevier. p. 1345. ISBN 978-0-08-044301-0.
  3. Pierson, Hugh O. (1992). Handbook of Chemical Vapor Deposition (CVD): Principles, Technology, and Applications. William Andrew Inc. ISBN 0-8155-1300-3.
  4. Zhong, Y.; Shaw, L. (2011). 'A study on the synthesis of nanostructured WC–10 wt% Co particles from WO3 , Co3O4 , and graphite'. Journal of Materials Science 46 (19): 6323–6331. Bibcode:2011JMatS..46.6323Z. doi:10.1007/s10853-010-4937-y.
  5. Groover, Mikell P. (2010). Fundamentals of Modern Manufacturing: Materials, Processes, and Systems. John Wiley & Sons. p. 135. ISBN 978-0-470-46700-8.
  6. Kurlov, p. 3
  7. Cardarelli, François (2008). Materials Handbook: A Concise Desktop Reference. Springer Science & Business Media. pp. 640–. ISBN 978-1-84628-669-8.
  8. Kurlov, pp. 30, 135
  9. Sprince, NL.; Chamberlin, RI.; Hales, CA.; Weber, AL.; Kazemi, H. (1984). 'Respiratory disease in tungsten carbide production workers'. Chest 86 (4): 549–557. PMID 6434250. doi:10.1378/chest.86.4.549.
  10. 12th Report on Carcinogens'. National Toxicology Program. http://ntp.niehs.nih.gov/go/roc12. เรียกข้อมูลเมื่อ 2011-06-24.
ความคิดเห็น :
891
อ้างอิง

mshahid
This is a brilliant blog! I'm very happy with the comments!.. News portal
 
mshahid [154.192.183.xxx] เมื่อ 30/10/2021 14:03
892
อ้างอิง
Hello friend, I have read your web page. Really it is relevant to dedicated subject. Keep it continue with this website. My name is Arpita Jain. I am a Mumbai independent female model. I am very hot and sexy girl. I deal in Mumbai Escort Service. I provide my Mumbai premium services in five star hotels. I am available for outcall and incall in lowest price. If you want to book my service kindly contact me through my website.
<a href='https://arpitajain.org/ '>Mumbai Escorts</a>  
<a href='https://arpitajain.org/ '>Mumbai Escort Service</a> 
 
ลิงค์ที่เกี่ยวข้อง : https://arpitajain.org/
Arpita Jain [157.40.98.xxx] เมื่อ 31/10/2021 11:41
893
อ้างอิง

kenny
Thank you.It's nice post.SFA
 
kenny [147.192.119.xxx] เมื่อ 1/11/2021 01:03
894
อ้างอิง
Calling escorts to your place isn’t expensive any more. My Mumbai Escort Service is introducing all their in call and outcall services at the same rate. Now, you don’t have to count extra bucks to get your Mumbai Escorts in your bedroom. For the men who don’t have any clear idea about in call and outcall services let me elaborate it to you.
When you are reaching the Mumbai Escorts agency and enjoying our services here at our place, that's called service. On the other hand, when you are calling our escorts at your place and she is going out to reach you, that is an outcall service. From now on, outcall services are also affordable and easily available. To get your booking, you can call us anytime on the given number or you can book your lady directly from the escort website.
We appreciate booking from everywhere and you can also get some escort agents to book Mumbai Escorts on behalf of you. In that case, you will choose the lady and the agent will take care of all the formalities keeping your identity secretive to us. In addition, my Mumbai Escort Service also provides fine escort agents who charge a very little and does the job for you.
As promised, you will also get discounts on your first outcall service booking and if you are availing our membership you will get one service free. To be precise, in your membership the number of times you will pay for, you will get one extra time for free. In addition, every booking comes with an exciting offer on the next booking, so you will get that too. Our membership package is affordable and comes with lots of perks, so I am sure you will love it.
 
ลิงค์ที่เกี่ยวข้อง : https://escortagencyinmumbai.com/
sweetheartpriya003 [122.161.50.xxx] เมื่อ 1/11/2021 13:42
895
อ้างอิง

메이저안전놀이터
Nice post. I learn something totally new and challenging on blogs I stumbleupon everyday. It’s always useful to read through content from other authors and use something from other sites.
메이저안전놀이터
 
ลิงค์ที่เกี่ยวข้อง : https://mtygy.com/
메이저안전놀이터 [185.225.234.xxx] เมื่อ 2/11/2021 11:19
896
อ้างอิง

Prism Lead India

 Prism Lead India is the best business listing company in Bangalore where you will get all types of services like, Pest control service in Bangalore, bathroom cleaning services in Bangalore, AC Repair Service, computer repair shop in bangalore, Water Tank Cleaning, Home Cleaning, Packers and Movers, Home Painting, computer repairing shops in Bangalore, etc.

 

Our comprehensive pest control service includes disinsection, deratization, and sanitation. The objective is to keep the populations of vector-pest agents controlled, through intensive surveillance that includes: reports, inspections, and monthly treatments. Prism LEAD INDIA puts safe and harmless technologies at your disposal.


 Our comprehensive pest control service includes disinsection, deratization, and sanitation. The objective is to keep the populations of vector-pest agents controlled, through intensive surveillance that includes: reports, inspections, and monthly treatments. Prism LEAD INDIA puts safe and harmless technologies at your disposal.

The service includes pest control service in Bangalore and incorporates preventive and corrective measures to eliminate the presence of vectors, in order to minimize the economic damage for the client.

The key to effective pest elimination consists of manipulating the factors that limit the reproduction and survival potential of each pest. This occasionally involves the use of pesticides, but sanitation is preferred as a control mechanism, in order to minimize risk or harm to man and the environment. Additionally we provides  laptop repairing shops in Bangalore

RISK FACTOR

The removal of food, water, and possible shelters has a very significant impact on the pest populations to be controlled; These characteristics define the load capacity of an enclosure. In collaboration with the client, our task is to minimize these three factors by reducing the spread of pests.

It is necessary to carry out preventive actions regularly, for which we offer regular and planned maintenance programs, usually annually; the frequency is defined according to the needs of the enclosure to be protected. We are the top rated packers and movers in bangalore. We do all kinds of packing and moving services in india.

 
 
ลิงค์ที่เกี่ยวข้อง : https://www.prismleadindia.in/listings/packers-and-movers-bangalore/
Prism Lead India [49.205.141.xxx] เมื่อ 2/11/2021 12:32
897
อ้างอิง

Ankita Sharma
We can fulfill all your fantasies by providing compassionate housewife Mumbai Escorts at the cheapest prices. Our escorts agency offering the Mumbai Escorts service for you. Book your Girl and enjoy the night with her. We assure you to offer the best escort service in Mumbai. Book your girl and enjoy all night with a hot sexy girl. We can arrange your meeting with our escorts in restaurants, clubs, cafes, bars, hotels, and apartments also. Get the best escort service in Mumbai at the lowest prices with us.
 
ลิงค์ที่เกี่ยวข้อง : https://www.missdelhiescort.com/
Ankita Sharma [103.57.85.xxx] เมื่อ 2/11/2021 12:58
898
อ้างอิง

ritusharma
My Name Is Ritu Sharma. I Run My Own Independent Mumbai Escorts. I Am Professional Mumbai Model. I Provide VIP Services At Your Home Or In Hotel. My VIP Service Charge Is Low And Service Super. Contact Me Avail 20% Off At Your First Deal. I Have Four Year Experience To Run My Mumbai Escorts. I Am Very Comfortable To Provide My Mumbai Escorts Service In Local Mumbai Or Out Of Station Also. You Can Book our Mumbai Escort Service anytime charges is very low in front of our competitors. If you deal first time you can get 20% off in first deal.
 https://www.escortservicemumbai.net/
 
ลิงค์ที่เกี่ยวข้อง : https://www.escortservicemumbai.net/
ritusharma [122.161.48.xxx] เมื่อ 2/11/2021 15:18
899
อ้างอิง

faridabad call girls
faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service 
faridabad call girls [223.190.107.xxx] เมื่อ 3/11/2021 12:21
900
อ้างอิง

Call girls in faridabad
faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service faridabad escort service 
Call girls in faridabad [223.190.107.xxx] เมื่อ 3/11/2021 12:31
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120
ความคิดเห็นของผู้เข้าชม
ชื่อผู้แสดงความคิดเห็น :
สถานะ : รหัสผ่าน :
ลิงค์ที่เกี่ยวข้อง :
รหัสความปลอดภัย :