Author: Publisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Creep Behavior in SiC Whisker-reinforced Alumina Composite
Author: François Morel
Author: Comparison of Short and Longer Term Loading on the Creep Behaviour of Alumina-silicon Carbide Whisker Composites
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 9
Book Description
The incorporation of SiC whiskers into alumina ceramics has resulted in several improved room temperature properties of the composite such as fracture toughness, strength, erosion resistance and fatigue. The creep resistance has also been generally observed to increase with the addition of whiskers. However, significant scatter in measured secondary creep rates still exist, depending on the material and the test conditions that were utilized. The objective of this investigation was to compare two separate creep tests performed in compression using a SiC{sub w}/Al2O3 material obtained from the same process batch. The differences in creep behavior between the tests could thus be ascribed to the difference in creep conditions solely. In one case the creep behavior was studied under short term loading (
Tensile Creep of Silicon Carbide Whisker-reinforced Alumina Composites [microform]
![Tensile Creep of Silicon Carbide Whisker-reinforced Alumina Composites [microform] PDF](https://books.google.com/books/content/images/frontcover/JaSttAEACAAJ?fife=w80-h100)
Author: Guang-Chun QuanPublisher: Library and Archives Canada = Bibliothèque et Archives Canada
ISBN: 9780612977914
Category : Aluminum oxide
Languages : en
Pages : 340
Book Description
Alumina composites with 10, 20 and 30 volume % SiC whiskers were fabricated using colloidal processing methods followed by uniaxial hot pressing. The tensile creep properties of these materials have been studied between 1200°C and 1400°C.
High Temperature Mechanical Behaviour of Ceramic Composites
Author: Karl JakusPublisher: Elsevier
ISBN: 0080523889
Category : Technology & Engineering
Languages : en
Pages : 569
Book Description
High Temperature Mechanical Behavior of Ceramic Composites provides an up-to-date comprehensive coverage of the mechanical behavior of ceramic matrix composites at elevated temperatures. Topics include both short-term behavior (strength, fracture toughness and R-curve behavior) and long-term behavior (creep, creep-fatigue, delayed failure and lifetime). Emphasis is on a review of fundamentals and on the mechanics and mechanisms underlying properties. This is the first time that complete information of elevated temperature behavior of ceramic composites has ever been compacted together in a single volume. Of particular importance is that each chapter, written by internationally recognized experts, includes a substantial review component enabling the new material to be put in proper perspective. Shanti Nair is Associate Professor at the Department of Mechanical Engineering at the University of Massachusetts at Amherst. Karl Jakus is Professor at the University of Massachusetts at Amherst.
Scientific and Technical Aerospace Reports
Author: Properties of Whisker-reinforced Ceramics
Author: Publisher:
ISBN:
Category :
Languages : en
Pages : 25
Book Description
The paper summarizes studies of SiC whisker-reinforced alumina composites their properties and the influence of composition and microstructure. Both steady-state toughness and R-curve response increase with whisker content and diameter. Room temperature flexure strength of aluminas with different grain sizes also increases with whisker content. Resistance to slow crack growth under both monotonic and cyclic loading is improved by whisker reinforcement compared to alumina and other ceramics. The thermal conductivity and electrical resistivity exhibit a substantial increase and decrease, respectively, with whisker loadings above 10 vol %. Thermal expansion coefficients decrease in a systematic fashion with increase in whisker content. However, the expansion coefficients are greater parallel to hot pressing axis compared to perpendicular direction owing to internal stresses and preferred orientation of whiskers. The changes in mechanical and thermal properties due to SiC whisker additions result in substantial improvement in thermal shock resistance for samples of various sizes. At elevated temperatures, tests in air show that improvements in strength and resistance to strength degradation are associated with SiC whisker reinforcement. The limiting factors in elevated temperature mechanical response of the composite at 1200C and above are related to surface oxidation-reaction processes and creep. On the other hand, the creep resistance of the composite is far greater than alumina with a similar fine grain size at temperatures (less-than or equal to) 1200C. Furthermore by increasing the grain size of the alumina matrix, creep resistance of the composite can be increased. In essence, SiC whisker reinforced alumina composites provide an example of a system whose properties can be tailored through control of microstructure and composition.
Compressive Creep Behavior of a Unidirectional Nicalon Reinforced CAS Matrix Composite
Author: Randel Frederick MercerPublisher:
ISBN:
Category :
Languages : en
Pages : 258
Book Description
Handbook of Ceramic Composites
Author: Narottam P. BansalPublisher: Springer Science & Business Media
ISBN: 0387239863
Category : Technology & Engineering
Languages : en
Pages : 547
Book Description
This valuable handbook has been compiled by internationally renowned researchers in the field. Each chapter is focused on a specific composite system or a class of composites, presenting a detailed description of processing, properties, and applications.
Silicon Carbide Ceramics
Author: S. SomiyaPublisher: Springer Science & Business Media
ISBN: 9781851665617
Category : Technology & Engineering
Languages : en
Pages : 328
Book Description
Silicon carbides have major industrial uses as high temperature structural ceramic materials. These two volumes are translated from the Japanese and provide a comprehensive account of the seminal work going on in Japan.