Tribological behavior of TiB2–TiC–Al2O3 composite coating synthesized by combined SHS and laser technology

Spray process for in situ synthesizing Ti(C,N)-TiB2-Al2O3 composite ceramic coatings

“…Toughening ceramics becomes a cosmopolitan difficult problem. Researches indicated that composite ceramics composed of some single-phased ceramics with good physical and chemical compatibility have higher toughness than the single-phased ceramics, and the toughness of ternary ceramics (such as TiB2-TiCAl2O3, TiB2-TiC-Al2O3-SiC et al) is higher than that of the binary ceramics (such as TiB2-TiC, TiB2-Al2O3, TiC-Al2O3, Al2O3-SiC et al) [1][2][3][4][5]. Among them, TiB2-TiC, TiB2-Ti(C,N) and TiB2-TiC-Al2O3 were widely investigated as coating materials [6,7].…”

“…Among them, TiB2-TiC, TiB2-Ti(C,N) and TiB2-TiC-Al2O3 were widely investigated as coating materials [6,7]. They were widely reported to be prepared by reactive flame spray, argon arc cladding, lazer cladding, electro-thermal explosion spray and reactive plasma spray, whereas seldom reported to be prepared by arc spray technology [2,3,[8][9][10][11].…”

“…Among them, TiB2-TiC, TiB2-Ti(C,N) and TiB2-TiC-Al2O3 were widely investigated as coating materials [6,7]. They were widely reported to be prepared by reactive flame spray, argon arc cladding, lazer cladding, electro-thermal explosion spray and reactive plasma spray, whereas seldom reported to be prepared by arc spray technology [2,3,[8][9][10][11].As well known, the arc spray technology is mainly used to prepare metal coatings, or ceramic grains strengthening metal-based composite coatings, whose main composition is still metals, but hard to prepare entire ceramic coatings. This paper developed a new ceramic coating preparation method of reactive arc spray (abbr.…”

Evaluation of modulus of elasticity, nano-hardness and fracture toughness of TiB2–TiC–Al2O3 composite coating developed by SHS and laser cladding

“…(1) has been used for experimentation. Details of the laser treatment procedure have been described in author's previous work [38]. Experiments were conducted over a range of laser processing parameters as depicted in Table 1.…”

“…The authors had previously developed TiB 2 -TiC-Al 2 O 3 composite coating by combined SHS and laser technology utilizing both CO 2 as well as diode lasers [37,38]. The composite coatings exhibited high hardness and high sliding wear resistance over a wide range of normal load-sliding speed combinations in ballon-disc sliding wear tests.…”