Brazing of super-hard AlMgB14–TiB2 ceramic to 304 stainless steel with AgCuTi filler alloy

Song, Xiaoguo; Lei, Yucheng; Wang, Fu; Luo, Zhen; Li, H.L.; Long, Wei; Hu, Shengpeng

doi:10.1016/j.vacuum.2021.110810

Cited by 8 publications

(3 citation statements)

References 29 publications

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“…The properties of such materials based on ZrO 2 and ZrB 2 have been reported by Zhang et al [22] and Balak et al [23]. For the AlMgB 14 composites, the compositions with the addition of Cu [15], Al [16], Si [26], TiB 2 [27] are intensively studying along with the study of the possibility of brazing of the AlMgB 14 -based materials to the metallic base in order to combine high hardness and low frictional coefficient of the ceramic with high fracture toughness of metal [28].…”

Section: Discussionmentioning

confidence: 99%

Structure and flexural strength of the hot-pressed AlMgB₁₄ ceramic

Tkachev¹,

Nikitin²,

Zhukov³

et al. 2023

Phys. Scr.

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AlMgB14 materials were obtained by hot-pressing of the prereacted AlMgB14 powder. The phase composition, structure, hardness and flexural strength have been studied. The XRD studies shown that the phase composition of the obtained materials contains from 9 to 12 wt. % of the spinel MgAl2O4 phase except target AlMgB14-phase. The spinel content increases linearly with an increase in the hot-pressing temperature from 1400 °C to 1600 °C. It was found that the density of the studied materials non-linearly depends on the hot-pressing temperature. An increase in the hot-pressing temperature from 1400 °C to 1500 °C leads to an increase in the relative density of the samples from 84 % to 93 %, respectively. A further increase in the hot-pressing temperature to 1600 °C leads to a decrease in the relative density to 81 % due to the complication of the densification processes with an increase in the spinel content. An increase in the relative density from 81 % to 93 % leads to an increase in the flexural strength from 121 to 314 MPa and an increase in the Vickers microhardness from 5.1 to 7.9 GPa, respectively.

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Section: Discussionmentioning

confidence: 99%

Structure and flexural strength of the hot-pressed AlMgB₁₄ ceramic

Tkachev¹,

Nikitin²,

Zhukov³

et al. 2023

Phys. Scr.

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“…Vacuum brazing has become a relatively reliable joining process for ceramics and metal materials for its convenience and excellent performance of joints [4][5][6][7][8][9][10][11]. At present, some researchers have successfully brazed alumina ceramics and various metals with silver-copper-titanium filler [12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Effect of copper interlayer to the microstructure and strength of alumina/304 stainless steel joint brazed with silver‐copper‐titanium filler

Li,

Chen

et al. 2023

Materialwissenschaft Werkst

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Alumina and 304 stainless steel were brazed with silver‐copper‐titanium filler+copper foil. The effect of adding copper foil to the filler on the microstructure of the alumina/304 joint was studied, and the reasons for the effect of adding copper foil with different thicknesses on the joint performance were also analyzed. The standard microstructure of alumina/304 joint with silver‐copper‐titanium+copper foil filler is alumina ceramic/copper compound with titanium and oxygen (3 : 3 : 1) (Cu3Ti3O) continuous layer+copper titanide (TiCu)/silver solid solution+copper solid solution/titanium compound with iron (1 : 2) (TiFe2)+iron‐chromium compound/304 stainless steel. The added copper foil inhibits the diffusion of titanium elements, thereby reducing the formation of the brittle copper compound with titanium and oxygen (3 : 3 : 1) (Cu3Ti3O) and alleviating the residual stress. In addition, after adding copper foil, the copper solid solution is distributed in blocks in the joint, which also improves the plastic deformation ability of the joint. Under the synergistic effect of these two effects after adding copper foil, the joint strength is improved. When the copper foil was 200 μm, the shear strength is 198.10 MPa.

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“…The most recent advances and new results include the following: hard and lubricant BAM films produced by DC magnetron sputtering of three elemental targets (B, Mg, Al) [16], employing the process of RF plasma sputtering of AlMgB 14 powder targets [17], AlMgB 14 /TiB 2 composite ceramic brazed onto 304 stainless steel using a commercial Ag-CuTi eutectic foil [18], examination of BAM-coated twist drill wear, the evolution of cuttingedge geometry in drilling experiments with carbon-fiber-reinforced plastic (CFRP) laminate [19] and the novel application of BAM-based ceramic coatings onto the blade edges of razor blades [20] and onto the surfaces of rolling elements in bearing assemblies [21]. Especially noteworthy is the deep nanostructural characterization of the mechanical-tribological behavior and the analysis of the wear rate of nanocomposite TiSiCN coatings deposited on high-Co-based high-speed steel (ASSAB 17) burins [22].…”

Section: Introductionmentioning

confidence: 99%

Hard and Highly Adhesive AlMgB14 Coatings RF Sputtered on Tungsten Carbide and High-Speed Steel

Grishin,

Putrolaynen

2023

Materials

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We report a new industrial application of aluminum magnesium boride AlMgB14 (BAM) coatings to enhance the hardness of tungsten carbide ceramic (WC-Co) and high-speed steel tools. BAM films were deposited by RF magnetron sputtering of a single dense stoichiometric ceramic target onto commercial WC-Co turning inserts and R6M5 steel drill bits. High target sputtering power and sufficiently short target-to-substrate distance were found to be critical processing conditions. Very smooth (6.6 nm RMS surface roughness onto Si wafers) and hard AlMgB14 coatings enhance the hardness of WC-Co inserts and high-speed R6M5 steel by a factor of two and three, respectively. Complete coating spallation failure occurred at a scratch adhesion strength of 18 N. High work of adhesion and low friction coefficient, estimated for BAM onto drill bits, was as high as 64 J/m2 and as low as 0.07, respectively, more than twice the surpass characteristics of N-doped diamond-like carbon (DLC) films deposited onto nitride high-speed W6Mo5Cr4V2 steel.

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Brazing of super-hard AlMgB14–TiB2 ceramic to 304 stainless steel with AgCuTi filler alloy

Cited by 8 publications

References 29 publications

Structure and flexural strength of the hot-pressed AlMgB₁₄ ceramic

Structure and flexural strength of the hot-pressed AlMgB₁₄ ceramic

Effect of copper interlayer to the microstructure and strength of alumina/304 stainless steel joint brazed with silver‐copper‐titanium filler

Hard and Highly Adhesive AlMgB14 Coatings RF Sputtered on Tungsten Carbide and High-Speed Steel

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Brazing of super-hard AlMgB14–TiB2 ceramic to 304 stainless steel with AgCuTi filler alloy

Cited by 8 publications

References 29 publications

Structure and flexural strength of the hot-pressed AlMgB14 ceramic

Structure and flexural strength of the hot-pressed AlMgB14 ceramic

Effect of copper interlayer to the microstructure and strength of alumina/304 stainless steel joint brazed with silver‐copper‐titanium filler

Hard and Highly Adhesive AlMgB14 Coatings RF Sputtered on Tungsten Carbide and High-Speed Steel

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Product

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About

Structure and flexural strength of the hot-pressed AlMgB₁₄ ceramic

Structure and flexural strength of the hot-pressed AlMgB₁₄ ceramic