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Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005772
EISBN: 978-1-62708-165-8
... Abstract Boriding is a thermochemical diffusion-based surface-hardening process that can be applied to a wide variety of ferrous, nonferrous, and cermet materials. It is performed on metal components as a solution for extending the life of metal parts that wear out too quickly in applications...
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Published: 31 December 2017
Fig. 12 Selective boriding illustrated by applying boriding paste (spelling the word boride) to AISI 1018 plain-carbon steel flat stock (a) producing boride layer only below the word Boride visible after grit blasting (b). Courtesy of Bluewater Thermal Solutions More
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Published: 01 August 2013
Fig. 3 Effect of boriding on wear resistance (Faville test). (a) 0.45% C (C45) steel borided at 900 °C (1650 °F) for 3 h. (b) Titanium borided at 1000 °C (1830 °F) for 24 h. (c) Tantalum borided at 1000 °C (1830 °F) for 8 h. Source: Ref 13 More
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Published: 01 August 2013
Fig. 12 Diagram of the packing of a single geometrical part in a pack boriding box. Source: Ref1 More
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Published: 01 August 2013
Fig. 13 Diagram showing the influence of B 4 C content of the boriding powder on the proportion of FeB phase in the boride layer of various steels borided with pack powder at 900n °C (1650 °F) for 5 h. Source: Ref 1 More
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Published: 01 August 2013
Fig. 14 Effect of pack boriding temperature and time on the boride layer thickness in a low-carbon (Ck 45) steel. Source: Ref 31 , 32 More
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Published: 01 August 2013
Fig. 17 Diagram of a fluidized bed for boriding. Source: Ref 4 , 5 More
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Published: 31 December 2017
Fig. 2 Boride layer morphologies: (a) 228 µm (0.009 in.) thick boride layer on AISI 1018 plain-carbon steel borided at 950 °C (1740 °F) for 22 h, (b) 228 µm thick boride layer on AISI 1074 plain-carbon steel borided at 950 °C for 18 h, (c) 114 µm (0.0045 in.) thick boride layer on AISI 8640 More
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Published: 31 December 2017
Fig. 4 Boride layers in Inconel 718: (a) borided at 760 °C (1400 °F) for 16 h in low B content powder, (b) borided at 800 °C (1470 °F) for 8 h in low B content powder, (c) borided at 800 °C for 8 h in high B content powder, (d) borided at 760 °C for 32 h in low B content powder, (e) borided More
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006420
EISBN: 978-1-62708-192-4
... the structures of boride layers in ferrous materials and boride-layer structures in nickel-base superalloys. The primary reason for boriding metals is to increase wear resistance against abrasion and erosion. The article reviews the wear resistance and coefficient of friction of boride layers, as well as galling...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006364
EISBN: 978-1-62708-192-4
... Abstract This article provides a brief introduction to abrasive wear-resistant coating materials that contain a large amount of hard phases, such as borides, carbides, or carboborides. It describes some of the commonly used methods of producing thick wear-resistant coatings. The article also...
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Published: 01 August 2013
Fig. 1 Effect of steel composition on the morphology and thickness of the boride layer. Source: Ref 8 More
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Published: 01 August 2013
Fig. 7 Microstructure of boride layers after varying exposures to 650 °C (1200 °F) service temperatures after boriding More
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Published: 01 August 2013
Fig. 8 Separation of dual-phase FeB (dark teeth) and Fe 2 B (light teeth) boride layer on an AISI 1045 steel (borided at 927 °C, or 1700 °F, for 6 h). Original magnification: 200× More
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Published: 01 August 2013
Fig. 9 Spalling of a dual-phase FeB and Fe 2 B boride layer at a corner of AISI 1045 steel where outer portion of boride layer is cracking off the surface of the corner. (borided at 927 °C, or 1700 °F, for 6h) 100× More
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Published: 01 August 2013
Fig. 10 Oversaturation of boride layer with FeB phase present at tip of an AISI 4130 cutter blade. Cracking of the tips is observed on part surfaces and in microstructure. More
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Published: 01 August 2013
Fig. 11 Effect of alloying elements in steel on boride layer thickness. Source: Ref 35, 36 More
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Published: 01 August 2013
Fig. 15 Linear relationship between boride layer thickness versus square root of time ( t ) for iron and steel boronized with B 4 C-Na 2 B 4 O 7 -Na 3 AlF 6 -base paste at 1000 °C (1830 °F). Source: Ref 46 More
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Published: 01 January 1993
Fig. 7 Microstructure of ERNiCr-C (two-layer plasma transferred arc deposit) boride-containing nickel-base hardfacing alloy. 425×. Source: Ref 2 More
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Published: 31 December 2017
Fig. 1 Unit cell and crystal structure (body-centered tetragonal) of iron boride (Fe 2 B) compound. Source: Ref 2 More