跳至主要内容

The Abrasive Wear of Non-Oxide Structural Ceramics in Wet Environment

Read full paper at:
http://www.scirp.org/journal/PaperInformation.aspx?PaperID=50944#.VFCEzlfHRK0

Silicon carbide and silicon nitride are recognized as phases with very good mechanical properties. Many parts of machines and mechanical devices are made of these materials. Particulate composites basing on both mentioned phases have significant potential of properties improvement. The aim of presented work was to check the difference in wear behavior when materials surfaces were attacked by hard, loose particles in wet environment (pulp). Investigations were performed on silicon carbide, silicon nitride and two composites on their matrices. The basic performed test was the Miller Test according to ASTM Standard. The detail microstructural and mechanical characterization of investigated materials was done. Residual stress state caused by coefficients of thermal expansion mismatch was calculated using FEM approach. The second phases for composites were selected to introduce the compressive stress state into the matrix phase. Comparative studies of abrasive wear of “pure” phases and composites performed showed differences between dominating wear mechanisms. Tests results proved that the influence of the second phase presence in the materials was significant for the wear rate.
Cite this paper
Pędzich, Z. , Grabowski, G. , Saferna, I. , Ziąbka, M. , Gubernat, A. , Szczerba, J. , Bućko, M. and Kot, M. (2014) The Abrasive Wear of Non-Oxide Structural Ceramics in Wet Environment. Journal of Materials Science and Chemical Engineering, 2, 9-15. doi: 10.4236/msce.2014.210002. 
 

[1] Grabowski, G. and P?dzich, Z. (2007) Residual Stresses in Particulate Composites with Alumina and Zirconia Matrices. Journal of the European Ceramic Society, 27, 1287-1292. http://dx.doi.org/10.1016/j.jeurceramsoc.2006.04.096
[2] Grabowski, G. and Stobierski, L. (2005) Influence of Thermal Stresses on Mechanical Properties of Ceramics Particulate Composites. Ceramika/Ceramics, 91, 627-634.
[3] Jiao, S., Jenkins, M.L.L. and Davidge, R.W.W. (1997) Interfacial Fracture Energy-Mechanical Behaviour Relationship in Al2O3/SiC and Al2O3/TiN Nanocomposites. Acta Materialia, 45, 149-156. http://dx.doi.org/10.1016/S1359-6454(96)00168-1
[4] Ohji, T., Jeong, Y.-K., Choa, Y.-H. and Niihara, K. (1998) Strengthening and Toughening Mechanisms of Ceramic Nanocomposites. Journal of the American Ceramic Society, 60, 1453-1460. http://dx.doi.org/10.1111/j.1151-2916.1998.tb02503.x
[5] Stobierski, L. and Gubernat, A. (2003) Sintering of Silicon Carbide I. Effect of Carbon. Ceramics International, 29, 287-292. http://dx.doi.org/10.1016/S0272-8842(02)00117-7
[6] Stobierski, L. and Gubernat, A. (2003) Sintering of Silicon Carbide II. Effect of Boron. Ceramics International, 29, 355-361. http://dx.doi.org/10.1016/S0272-8842(02)00144-X
[7] Hayashi, T., Munakata, H., Suzuki, H. and Saito, H. (1986) Pressureless Sintering of Si3N4 with Y2O3 and Al2O3. Journal of Materials Science, 21, 3501-3508. http://dx.doi.org/10.1007/BF02402994
[8] Taya, M., Hayashi, S., Kobayashi, A.S. and Yoon, H.S.S. (1989) Tough-ening of a Particulate-Reinforced/Ceramic- Matrix Composite. Journal of the American Ceramic Society, 73, 1382-1391. http://dx.doi.org/10.1111/j.1151-2916.1990.tb05209.x
[9] Test Method for Determination of Slurry Abrasivity (Miller Number) and Slurry Abrasion Response of Materials (SAR Number), ASTM G75-95 Standard.
[10] User Manual of Nova Werke AG device for Miller Test.        eww141029lx
标签：

评论

发表评论

此博客中的热门博文

Does Immigration Promote the Investment of the Monopolistic Firm?

In the present paper, we examine the effect of increasing uncertainty of immigrants’ growth on the optimal timing of investment of a firm that has a monopolistic power over the labor market. It is revealed that when the uncertainty of immigrants’ growth is more than a threshold level, increasing uncertainty of immigrants’ growth accelerates the optimal timing of firms’ investment and enhances the economic growth, even if the uncertainty of immigrants’ growth is formulated by the geometric Brownian motion, which is in sharp contrast to the standard result that an increase in the uncertainty postpones the optimal timing. With an increase in the immigrants over the past ten years, workforces in the host countries have been growing significantly to the extent that the immigrants represent 70% of the increase in the workforce in Europe, and 47% in the United States as OECD indicates. In the present paper, we attempted to investigate the effect of increased uncertainty caused by the growi...
发表评论
阅读全文

Education Policy Implementation: A Mechanism for Enhancing Primary Education Development in Zanzibar

Education is one of the fundamental rights of individuals; therefore, the government of a country needs to develop and strengthen educational policy and quality as well as to ensure that everyone has equal access to basic education. The improvement of access and quality of education in the world is becoming as an essential factor in development, whereas the basic education (primary school), is acknowledged as a foundation of the higher educational development for every country. To fulfill this goal, governments introduce several policies and procedures; however, it requires some reforms and participation from the politician, policymakers, and other stakeholders to re-examine educational policy so that it can lead to multiplication and betterment of the reforms. Educational reforms actually focus on accountability. A positive educational development and reform is very challenging and needs more effort and strategy on how to use and utilize the resources effectively as such it can achie...
发表评论
阅读全文