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Knoop diamond indenters

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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 Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004043
EISBN: 978-1-62708-185-6
... Brinell hardness numbers for steel Brinell indentation diam, mm Brinell hardness number (a) 3000 kgf load, 10 mm ball (a) Vickers hardness No. Rockwell hardness No. Rockwell superficial hardness No., diamond indenter Knoop hardness No., 500 gf load and greater Scleroscope hardness No...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006761
EISBN: 978-1-62708-295-2
... ability of a material to resist compressive loads. The indenter may be spherical (Brinell test and some Rockwell methods), pyramidal (Vickers and Knoop tests), or conical (Rockwell C and N scales). In the Brinell, Vickers, and Knoop tests, the hardness value is the load supported by the unit area of the...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003241
EISBN: 978-1-62708-199-3
... performed with either the Knoop or the Vickers indenter. The Knoop indenter is more widely used in the United States; the Vickers indenter is more widely used in Europe. Knoop indentation testing is performed with a diamond ground to pyramidal form that produces a diamond-shape indentation having an...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001237
EISBN: 978-1-62708-170-2
... fracture toughness data can be determined. Hardness is defined as the resistance to penetration by an indenter, and the Knoop and Vickers measurements are the most common. A Knoop hardness number (HK) is obtained by: HK = P / A p = 14.229   P / d 2 where P is the load...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.9781627082952
EISBN: 978-1-62708-295-2
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006757
EISBN: 978-1-62708-295-2
... ” dealing with ceramic materials, as well as the various procedures previously outlined for chemical analysis and characterization of materials. The presence of distortions or plastic deformation in a component can indicate the direction of loading that was applied. The shape of indentations can also...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001239
EISBN: 978-1-62708-170-2
... is the Knoop hardness of the workpiece. (The workpiece generally has a smaller hardness than the abrasive.) The heat generated per unit area per unit time is: (Eq 8) q = F V π a 2 where F is the tangential grinding force. Note that this model of the moving heat source does...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.9781627081764
EISBN: 978-1-62708-176-4
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003055
EISBN: 978-1-62708-200-6
... Hardness Mohs Knoop Zirconia 8 1160 Garnet 8 1360 Calcined alumina 9 2100 Silicon carbide 9–10 2480 Boron carbide 9–10 2750 Cubic boron nitride 10 4500 Diamond 10 7000 The size and shape of abrasive grains have an effect on the lapping action. A broad size...
Series: ASM Handbook
Volume: 5A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v05a.9781627081719
EISBN: 978-1-62708-171-9
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0006515
EISBN: 978-1-62708-200-6
... high-density polyethylene HDT heat-deflection temperature HERF high-energy-rate forging HIP hot isostatic pressing HIPS high-impact polystyrene HK Knoop hardness HM high modulus HMC high-strength molding compound hp horsepower HP...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003057
EISBN: 978-1-62708-200-6
... guidelines for microstructural analysis of ceramics. Table 6 Preparation guidelines for microstructural analysis of ceramics Preparation stage Purpose Abrasive bonding Abrasive surface Diamond abrasive size Sectioning Obtain a representative section Fixed Metal-bonded wheel Material...
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
... shows the resistance of the ceramic to catastrophic failure. A ceramic can be indented with either a Knoop or Vickers shaped diamond indenter and the indentation size measured to give a hardness value. Hardness is related to properties such as wear resistance, which is often measured as the material...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001243
EISBN: 978-1-62708-170-2
... distorts the base metal and is influenced by it, which usually results in low hardness readings. The most reliable and most widely accepted hardness values are those obtained with the Vickers 136 diamond pyramid indenter or the Knoop indenter. With these, the hardness test must be made on a carefully...
Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005677
EISBN: 978-1-62708-198-6
... Materials Knoop hardness, kg/mm 2 Yield strength Ultimate tensile strength Ultimate compressive strength MPa ksi MPa ksi MPa ksi Alloys Alloy crown (Au-Ag-Cu) 125 (HV) 220 32 425 62 … … Amalgam  Admixed … … … 40 5.8 340 49  Unicompositional … … … 50 7.3...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003061
EISBN: 978-1-62708-200-6
... zirconium silicate (AZS) and basalt Ceramic-filled polymers, elastomers, or adhesives Table 1 Property comparison of various ceramic materials and abrasive-resistant steel Product Density Fracture toughness, MPa m Knoop hardness, kg/mm 2 Dry erosion resistance test (a...