Summary Abstract: Wear resistant carbide–boride composite coatings

Holleck, H.; Kühl, Ch.; Schulz, Herbert

doi:10.1116/1.572879

Cited by 26 publications

(13 citation statements)

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“…An especially good adhesion of TiN to TiB 2 has been predicted by Holleck [4] who noticed similar Ti lattice spacings on the TiN (111) and the TiB 2 (0001) planes suggesting a possible coherency between the layers. TiB 2 is observed to grow epitaxially on bcc metals with the relationship (10-10) TiB2 //(001) bcc and <0001> TiB2 //<010> bcc , where atomic matching occurs at the (10-10) TiB2 // (001) bcc Ti interface plane [5].…”

Section: Introductionmentioning

confidence: 77%

Characterisation of High Strength TiN/TiB _x Multilayered Ceramic Coatings

Steer

Inkson

2000

Interface Controlled Materials

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The microstructure of ceramic multilayered coatings deposited using TiN and TiB 2 targets has been investigated using HRTEM, EELS mapping and XRD. The coatings predominantly consist of nanocrystalline layers of alternating TiN and TiB, the latter being deposited nonstoichiometrically from the TiB 2 target as TiB.B27. Deposition of regions which are highly deficient in boron results in the coherent growth of large columnar TiN grains through many multilayer periods. IntroductionImprovements to the lifetimes of metal cutting tools have long been achieved by applying hard coatings. Current physical vapour deposition techniques provide the means of fabricating various configurations such as single-layer coatings, multiphase composite coatings, and complex configurations of two or more materials in multilayered or phase-gradient coatings [1].As outlined by Quinto [2], the major properties required by a hard coating are good adhesion, high microhardness and good chemical stability (especially with respect to the workpiece) at the working temperature. The choice of a TiN/TiB 2 multilayered ceramic system was made with these parameters in mind. The suitability of TiN as a hard coating is demonstrated by its widespread use in prolonging the lives of high speed metal cutting tools in industry [3]. TiB 2 is also an extremely hard and chemically stable ceramic, finding many applications as an inert dispersion hardener, particularly in structural intermetallic alloys.An especially good adhesion of TiN to TiB 2 has been predicted by Holleck [4] who noticed similar Ti lattice spacings on the TiN (111) and the TiB 2 (0001) planes suggesting a possible coherency between the layers. TiB 2 is observed to grow epitaxially on bcc metals with the relationship (10-10) TiB2 //(001) bcc and <0001> TiB2 //<010> bcc , where atomic matching occurs at the (10-10) TiB2 // (001) bcc Ti interface plane [5]. We can therefore predict a similar TiN -TiB 2 epitaxial growth relationship of (10-10) TiB2 // (001) TiN and <0001> TiB2 // <110> TiN , with low misfit matching on the (10-10) TiB2 // (001) TiN Ti planes.The use of multilayered systems has been shown to be of profound benefit to the hardness of coatings due to the addition of the layer interfaces and periodic changes in elastic modulus which are thought to hinder the movements of defects [6,7]. Many multilayered systems use layers of similar crystal structure in an attempt to guarantee coherence between the alternating materials; for instance the nitride films [8] which use transition metal nitrides with the NaCl Interface Controlled Materials. Edited by M. Rühle and H. Gleiter

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Section: Introductionmentioning

confidence: 77%

Characterisation of High Strength TiN/TiB _x Multilayered Ceramic Coatings

Steer

Inkson

2000

Interface Controlled Materials

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“…[2][3][4][5] The wear resistance of a TiB 2 -TiC composite coating deposited by sputtering was two-times greater than that of monolithic TiB 2 and TiC coatings, which could be attributed to the good coherency of the TiB 2 (0001) and TiC (111) planes. 6 Ti-based nonoxide in-situ composites with coherent interfaces exhibited superior mechanical properties compared to those of the monolithic materials. These composites have promising applications in wear-resistant parts, cutting tools, and hypersonic vehicles.…”

Section: Introductionmentioning

confidence: 99%

“…TiB 2 , TiC, and TiN have high melting points (above 3200 K), high hardness, good thermal conductivities, and high resistance to corrosion and oxidation at high temperatures . The wear resistance of a TiB 2 –TiC composite coating deposited by sputtering was two‐times greater than that of monolithic TiB 2 and TiC coatings, which could be attributed to the good coherency of the TiB 2 (0001) and TiC (111) planes . Ti‐based nonoxide in‐situ composites with coherent interfaces exhibited superior mechanical properties compared to those of the monolithic materials.…”

Section: Introductionmentioning

confidence: 99%

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Long‐Range Ordered Structure of Ti–B–C–N in a TiB₂–TiC_xN_1−x Eutectic Composite

Cheng

Katsui

et al. 2014

J. Am. Ceram. Soc.

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A TiB2–TiCxN1−x quasi‐binary eutectic composite, with a rod‐like faceted texture and a long‐range ordered structure of Ti–B–C–N, was prepared by the arc‐melting of TiB2, TiC, and TiN powders. Hexagonal single‐crystalline TiCxN1−x rods were grown in a single‐crystalline TiB2 matrix with a crystal orientation relationship of TiB2 (11bold2¯0)//TiCxN1−x (bold2¯02) and TiB2 [0001]//TiCxN1−x [111]. A long‐range ordered structure of Ti–B–C–N was formed by the intermixing of the coherent interplanar spacings of seven TiB2 (0001) and nine TiCxN1−x (111) planes.

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“…In recent years, a variety of hard coatings have been researched, ranging from diamond and cubic BN through to composite coatings including multiphase and multilayer containing forms such as Ti(N,C) [1], (Ti,A1)N [2], Ti-B-N [3][4][5], Ti-B-C-N [6], TiC and TiB [7], Ti-B-N and A1203 [5]. Composite coatings might combine the advantages of phases or layers, and good results have been reported with Ti-B-N coatings [3][4][5]8].…”

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confidence: 99%

The microstructure of the Ti-B-N coating after heat-treatment

Yang

Zhao

et al. 1996

J Mater Sci Lett

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Summary Abstract: Wear resistant carbide–boride composite coatings

Cited by 26 publications

References 0 publications

Characterisation of High Strength TiN/TiB _x Multilayered Ceramic Coatings

Characterisation of High Strength TiN/TiB _x Multilayered Ceramic Coatings

Long‐Range Ordered Structure of Ti–B–C–N in a TiB₂–TiC_xN_1−x Eutectic Composite

The microstructure of the Ti-B-N coating after heat-treatment

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Summary Abstract: Wear resistant carbide–boride composite coatings

Cited by 26 publications

References 0 publications

Characterisation of High Strength TiN/TiB x Multilayered Ceramic Coatings

Characterisation of High Strength TiN/TiB x Multilayered Ceramic Coatings

Long‐Range Ordered Structure of Ti–B–C–N in a TiB2–TiCxN1−x Eutectic Composite

The microstructure of the Ti-B-N coating after heat-treatment

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Characterisation of High Strength TiN/TiB _x Multilayered Ceramic Coatings

Characterisation of High Strength TiN/TiB _x Multilayered Ceramic Coatings

Long‐Range Ordered Structure of Ti–B–C–N in a TiB₂–TiC_xN_1−x Eutectic Composite