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hard ceramics

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Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003061
EISBN: 978-1-62708-200-6
... parameters affecting wear of ceramics, namely, hardness, thermal conductivity, fracture toughness, and corrosion resistance. The next part of the article addresses temperature-resistant applications of advanced ceramics. Specific applications of ceramic materials addressed include cutting tools, pump and...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003057
EISBN: 978-1-62708-200-6
.... The article describes testing methods such as room and high-temperature strength test methods, proof testing, fracture toughness measurement, and hardness and wear testing. It also explains methods for determining thermal expansion, thermal conductivity, heat capacity, and emissivity of ceramics and...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003054
EISBN: 978-1-62708-200-6
... Abstract Sintering provides the interparticle bonding that generates the attractive forces needed to hold together the otherwise loose ceramic powder mass. It also improves hardness, strength, transparency, toughness, electrical conductivity, thermal expansion, magnetic saturation, corrosion...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003059
EISBN: 978-1-62708-200-6
... Abstract This article provides crystallographic and engineering data for single oxide ceramics, zirconia, silicates, mullite, spinels, perovskites, borides, carbides, silicon carbide, boron carbide, tungsten carbide, silicon-nitride ceramics, diamond, and graphite. It includes data on crystal...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003055
EISBN: 978-1-62708-200-6
... after firing; they are also sometimes glazed and/or metallized. Advanced ceramics are rarely glazed, but they often require extensive shaping when they are fully hard and dense, since most are produced by processes (such as hot pressing) that combine forming and firing to give these ceramics maximum...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001316
EISBN: 978-1-62708-170-2
... edges or any holes present during firing. The second group of properties are those associated with the use of the product, such as appearance, smoothness, porosity, and corrosion resistance to various liquids and gases. Almost all vitreous coatings are expected to be homogeneous, smooth, and hard and...
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006671
EISBN: 978-1-62708-213-6
... totally appropriate to the characterization activities associated with ceramics and glasses. For example, the techniques used to polish hard metals prior to microstructural analysis can often lead to artifacts when applied to ceramics, which, in turn, can lead to misinterpretation of key features. Careful...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003049
EISBN: 978-1-62708-200-6
... is defined as a continuous adherent layer of glass on the surface of a ceramic body that is hard, nonabsorbent, and easily cleaned. A glaze is usually applied as a suspension of glaze-forming ingredients in water. After the glaze layer dries on the surface of the piece, it is fired, whereupon the...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003004
EISBN: 978-1-62708-200-6
... Melting point Maximum service temperature Thermal conductivity, W/m · K Coefficient of linear thermal expansion, from 25 to 800 °C (77 to 1470 °F), 10 −6 /°C Specific heat (mean) at 25 to 1000 °C (77 to 1830 °F), J/kg · °C Hardness, Mohs scale °C °F °C °F At 100 °C (212 °F) At 1000 °C (1830...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003053
EISBN: 978-1-62708-200-6
..., soft, binder, low density; B, hard binder, low density; C, soft binder, high density. TD, theoretical density; P, pressure Much more information is obtained from a compaction rate diagram, which is derived from the compaction response diagram by taking the first derivative of the curve. This...
Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005655
EISBN: 978-1-62708-198-6
.... When in contact with body fluids and host tissue, bioactive glasses develop a reactive layer at their surfaces, which provides a compliant interface between the bioactive glass and both soft and hard host tissue. A disadvantage of the bioactive glasses is their low mechanical strength and low fracture...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003051
EISBN: 978-1-62708-200-6
... ceramic whiteware compositions, % Component Fine whiteware Earthenware, wall tile Vitreous floor tile Chemical stoneware Tender porcelain Hard porcelain Electrical porcelain Steatite porcelain Bone china Hotel china Cookware Vitreous china, sanitaryware A B C D E F China clay...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003058
EISBN: 978-1-62708-200-6
.... Surfaces of brittle materials are particularly susceptible to contact damage caused by hard objects, during either indentation or impact. Similar damage is produced when sharp particles strike glass or ceramic surfaces. Lateral cracks reach the surface, causing material to spall off. The size of the origin...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003060
EISBN: 978-1-62708-200-6
... object damage (FOD) has proven to be a critical failure mode for ceramic blade materials. The inherent brittleness and low fracture toughness of ceramic materials can cause FOD to become a catastrophic failure mode for monolithic ceramic components. Sources of FOD are hard carbon particles from the...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003062
EISBN: 978-1-62708-200-6
... ferrites is also active. Categories of ferrite include hard, soft, and microwave materials. All are based primarily on Fe 2 O 3 . Recent developments with ceramic superconductors have targeted a number of important potential applications for these materials. Projected areas of major impact include thin...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003842
EISBN: 978-1-62708-183-2
... hypothesized that advanced ceramics may exhibit favorable high-temperature friction and wear properties because of their high hot hardness and achievable low surface roughness characteristics. This concept was loosely based on the premise that friction and wear, for self-mated steel for instance, was due to...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003056
EISBN: 978-1-62708-200-6
... Abstract Many applications of ceramics and glasses require them to be joined to each other or to other materials such as metals. This article focuses on ceramic joining technologies, including glass-metal sealing, glass-ceramic/metal joining, ceramic-metal joining, ceramic-ceramic joining, and...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003050
EISBN: 978-1-62708-200-6
... to recycling green scrap, attempts are being made to recycle fired scrap—normally disposed of in landfills—back into the process. Because this scrap is dense and hard, it can be difficult to crush into the desired size, especially in the case of large parts such as electrical porcelain insulators...
Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005675
EISBN: 978-1-62708-198-6
... in physical properties, and relates properties and hard-tissue response to particular clinical applications. The article provides information on glass or glass-ceramic particles for cancer treatments. bioactive glasses biocompatibility calcium phosphate ceramics cancer treatments ceramics...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001280
EISBN: 978-1-62708-170-2
... Molybdenum alloys 1040–1150 1900–2100 4–16 Tantalum alloys 1040–1150 1900–2100 4–12 Tungsten alloys 1040–1370 1900–2500 3–16 (a) Tolerances: ±6 °C (±10 °F) at 1040 °C (1900 °F);±14 °C (±25 °F) at 1260 °C (2300 °F). (b) Tolerance, ±10 min Table 12 Hardness of three ceramic...