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The Effects of ββββ-Si3N4 Whisker Content and Orientation on R-curve Behaviors of Si3N4 Ceramics Lin-Hua Zou 1, 2, a , Dong-Soo Park 2, Hai-Doo Kim 2, Chang-An Wang 1 and Yong Huang 1 1 State Key Lab of New Ceramics and Fine Processing, Tsinghua University, Beijing 100084, PR of China 2 Ceramic Materials Group, Korea institute of Machinery & Materials, 66 Sang-Nam-Dong, Chang-Won City, Kyung-Nam 641-010, South Korea a linhua_zou@hotmail.com Keywords: R-curve behavior, Whisker alignment, Si3N4, Ceramics Abstract.
The R-curve behaviors of the ceramics were investigated compared to those of Si3N4 ceramics with grain random distribution.
Han: Ceramic International, In Press (Elsevier Reference: CERI 1934) [26] J.
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Design and Preparation of Al2O3/TiC/CaF2 Self-lubricating Ceramic Tool Cao Tong-kun1, a, Shan Chun-sheng 1, b, Ge Jun-peng 1, c 1College of Electromechanical Engineering, Qingdao University of Science and Technology, Qingdao 266061, Shandong, China acaotk@163.com, b shchsh87@126.com, cgejunpeng0515@126.com Key words: self-lubricating ceramic tool, friction design, chemical compatibility, structure design Abstract.
There are three ways of the combination of ceramic matrix and solid lubricant, as Fig.3 shows: (1)The content of lubricant is low, which is completely separated from the ceramic matrix, as Fig.3 (a) shows.
Thus, the self-lubricating ceramic tool materials can get the continuous ceramic matrix and form reticulate structures, and the solid lubricant is coated in the reticulate structures.
Owen: Manufacturing Engineering Vol. 111 (1993), p 44 [2] C.
Forming Vol.1 (2008), p503 [3] Wu Z., Deng J.X. and Chen Y.: The International Journal of Advanced Manufacturing Technology, Online First (2012) [4] Deng J.X., Liu J.H., Zhao J.L.: Wear Vol. 264(2008), p298 [5] V.

Ceramics and ceramic composites are materials whose importance has increased due to their biocompatibility and resistance to corrosion.
Prattis, Kinetic study of the thermal decomposition of calcium carbonate by isotermal methods of analysis, The European Journal of mineral Processing and Enviromental Protection. 1-2 (2001) 89–102
Guruprasad, Role of ceramic particulate reinforcements on mechanical properties and fracture behavior of aluminum - based composites, Materials Science and Engineering. 745 (2019) 252–264
[12] ASTM International, C-1329-03 Standard Test Method for Vickers Indentation Hardness of Advanced Ceramics.
Washington, DC. (2024) [13] ASTM International, “E-384, Standart Test Method For Microindentacion Hardness of Materials,” Washington USA,DC (2024),

Introduction Circular disks are commonly used in a wide variety of engineering applications including space structures, electronic components and rotating machinery.
Stress analysis of rotating discs has long been an important issue in engineering design.
Zenkour, Analytical solutions for rotating exponentially-graded annular disks with various boundary conditions, International Journal of Structural Stability and Dynamics, 5 (2005) 557-577
Ghannad, Elastic analysis of exponential FGM disks subjected to internal and external pressure, Central European J. of Engineering, 3 (2013) 459-465
Journal of Solids and Structures, 37 (2000) 7809-7820 [14] A.M.

Equipment supports from the Department of Materials Engineering, Faculty of Engineering, Kasetsart University, and the Department of Science Service, Ministry of Science and Technology, Thailand are gratefully acknowledged.
Ceramics International. 39 (2013) 6623-6629
Ceramics International. 30(7) (2004) 1719- 1723
Journal of the European Ceramic Society. 26(9) (2006)1619-1628
Journal of the American Ceramic Society. 83(5) (2000) 1145-1148

Pressureless Sintering and Properties Investigation of Silicon Nitride Bin Li1,a, Yi Feng1,b, Huiqiang Liu1, Yanfang Zhu1,c, Dongbo Yu1, Xuebin Zhang1，Xiaobing Pan2，Jing Tu2, Xiaoping Ouyang2, Liangzhi Cao3 and Hongchun Wu3 1School of Materials Science and Engineering, Hefei University of Technology, Anhui, Hefei 230009, China 2Northwest Institute of Nuclear Technology, Shanxi, Xi′an 710024, China 3School of Energy and Power Engineering, Xi′an Jiao Tong University, Shanxi, Xi′an 710049, China a421370648@qq.com, bfy123@mail.hf.ah.cn, cxiaozhujudy@yahoo.com.cn Keywords: Silicon Nitride; Pressureless Sintering; Starting Powder; Sintering Additive; Mechanical Property Abstract.
The fracture mode of Si3N4 ceramics is intergranular and transgranular fracture, mainly intergranular fracture.
Vol.11 (1976), p. 1135 [2] Pavol Sajgalik and Miroslav Haviar: Ceramics International Vol.18 (1992), p. 279 [3] Zafer Tatli and Derek P.
Thompson: Journal of the European Ceramic Society Vol. 27 (2007) p. 791 [4] Yingfeng Shao, Dechang Jia and Boyang Liu: Journal of the European Ceramic Society 29 (2009) p. 1529 [5] Yokota, H. and Ibukiyama M.: Journal of the European Ceramic Society Vol.23 (2003), p. 55 [6] Hwang, C.
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Effect of Plasma Spray Process on TiO2 coating over Mild Steel Substrate I Arul raj1,a*, S Ramachandran2,b 1Research scholar, Department of Mechanical Engineering, Sathybama University, Chennai, India 2Professor and Research head, Faculty of Mechanical Engineering, Sathyabama University, Chennai, India aarulrajme1@gmail.com, baishram2006@gmail.com Keywords: Atmospheric Plasma Spray Process, Atomic Force Microscope, Scanning Electron Microscope, Porosity, Surface Roughness.
R.Samur, B.G.Cetiner, Quantitative determination of microcracks on ceramic coatings by computer image analysis, Metalurgija, 44, (2005), 41-44
G.Bolelli, L.Lusvarghi, T.Manfredini, F.PighettiMantini, Comparison between plasma- and HVOF sprayed ceramic coatings, International Journal of Surface Science and Engineering, Vol. 1, No. 1, (2007), 38-61
Alsaran, Influence of Surface Roughness on Corrosion and Tribological Behavior of CP-Ti After Thermal Oxidation Treatment, Journal of Materials Engineering and Performance, (2009)
Radhika B Parekh, Omar Shetty, Rubina Tabasum, Surface Modifications for Endosseou Dental Implants, International Journal of Oral Implantology and Clinical Research, 3(3), 2012,116-121

Acknowledgements The authors express sincere appreciation to the technical support of the School of Materials and Mineral Resources Engineering, Universiti Sains Malaysia.
Trusca, Structural and electrical properties of BNT-BT0.08 ceramics processed by spark plasma sintering, World Academy of Science, Engineering and Technology, 79 (2011) 147-150
Takahashi, Fabrication of a lead-free BNT piezoelectric material using a hybrid sintering process, International Journal of Applied Electromagnetics and Mechanics, 21 (2005) 171-181
Kim, Piezoelectric ceramic powder synthesis of bismuth-sodium titanate by a hydrothermal process, Journal of Ceramic Processing Research, 7 (2006) 91-94
Yin, Hydrothermal synthesis of Na0.5Bi0.5TiO3 fine powders, Materials Science and Engineering: B, 99 (2003) 506-510

In this paper, B4C porous ceramics were prepared with B4C ceramic slurry firstly, then AL and B4C porous ceramics were composited by means of pressureless infiltration method.
[2] Roy T K,etal:Pressureless sintering of boron carbide.Ceramics International,2006,32:227-233
Journal of the Ceramic Society of Japan,2008,116(1360):1319-1321
Ceramic Transactions, 2003, 151:71-82
Harbin Engineering University,2005

Influence of the Shape of Composites Materials on the Stability of Microwave Heating Processes Robert Cristian MARIN1,a*, Iulian STEFAN1,b, Mihaela Cristina PREDESCU1,c, Sorin Vasile SAVU1,d 1University of Craiova, Faculty of Mechanics, Department of Engineering and Management of Technological Systems, 1st Calugareni, 220037, Drobeta - Tr.
Due to the high fragility of the cordierite ceramic substrate, the processing of the shapes after cutting from the original ceramic monolith could not be done perfectly and the shapes obtained are not perfect geometric shapes.
Applied Thermal Engineering, 50 (1) (2013) 152-158 [3] Culbertson, D., Khair, M., Zhang, S., Tan, J., & Spooler, J., The Study of Exhaust Heating to Improve SCR Cold Start Performance.
SAE International Journal of Engines, 8(3) (2015) 1187-1195 [4] Peng, K., Zhou, J., Xu, W., You, Z., Long, W., Xiang, M., & Luo, M., Microwave irradiation-selective catalytic reduction of NO to N2 by activated carbon at low temperature. 
Marin, Microwave heating of ceramic substrate for catalytic application, International Conference on Advanced Research in Engineering CARE2020, (2020)