Composite deposits based on titanium aluminide produced by plasma spraying

Hoshiyama, Yasuhiro; Miyake, Hidekazu; Murakami, Kenji; Nakajima, Hideo

doi:10.1016/s0921-5093(01)01867-6

Cited by 19 publications

(9 citation statements)

References 11 publications

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“…Some of the powder compositions used for HVOF and APS spraying are the following: Ti50at.%Al [139,140], Al-21Ti-23Cr(at.%) [141], Al-9Cr-25Ti(at.%) [142], Ti-49.94Al-0.09Fe-0.06O2 (at.%) [143],TieAleN [144], g-TiAleAl 2 O 3 [145].…”

Section: High Velocity Oxygen Fuel (Hvof) and Atmospheric Plasma Spray mentioning

confidence: 99%

Thermal spraying of transition metal aluminides: An overview

Cinca

Guilemany

2012

Intermetallics

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Section: High Velocity Oxygen Fuel (Hvof) and Atmospheric Plasma Spray mentioning

confidence: 99%

Thermal spraying of transition metal aluminides: An overview

Cinca

Guilemany

2012

Intermetallics

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“…13) Hoshiyama et al 15) prepared Ti-Al-N composite powder by ball milling of elemental titanium and aluminum for about 84 h under nitrogen atmosphere, and the maximum value of microhardness of corresponding coating fabricated by LPPS is about 600 Hv as reported in their paper. On the other hand, Tsunekawa et al 14) utilized RLPPS to fabricate nitride dispersed TiAl coating using premixed Ti/Al powder, and coating with improved hardness of about 700 Hv was fabricated by addition of Mn and Nb to the premixed powders and activation of the nitride formation by means of transferred arc.…”

Section: Mechanical Properties Of Coatingsmentioning

confidence: 85%

“…Nitrogen plasma was applied in this reaction synthesis process, which resulted in the formation of the in situ reinforcement. Moreover, Hoshiyama et al 15) has reported that nitride and carbide dispersed composite coatings were fabricated by LPPS using Ar/H 2 plasma. The powder feedstock was prepared by ball milling of elemental titanium and aluminum powders under nitrogen atmosphere.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Evaluation of Ordinary Attritor Milled Ti-Al Powders and Corresponding Thermal Sprayed Coatings

2006

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Ordinary attritor milling of elemental metallic powders under atmospheric condition was utilized to prepare desirable amount of powders for thermal spraying. The effect of different BPR (Ball to Powder weight Ratio) has been investigated in terms of nitridation during milling. To investigate the effect of heat treatment on the formation of dispersed phases, heat treatment to the powder was performed as well. Titanium aluminide coatings with carbonitride dispersed phases were successfully fabricated by low pressure plasma spraying. The hardness and specific wear of the coatings prepared by the powders with different milling conditions was measured so as to investigate the effect of the content of dispersed titanium based carbonitride phases. Experimental results show that the formation of dispersed carbonitride phases depends strongly on milling condition, irrespective of heat treated powders or thermal sprayed coatings, and directly affects the mechanical properties of the coatings. Compared with the phase composition of heated powders and corresponding thermal sprayed coatings, it seems that the temperature of processing the MA powders is also a decisive factor on the phase formation, especially carbonitride phases and oxide phase.

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“…Al and α-Ti phases are the predominant constituents of the coatings, whatever the aluminum to titanium atomic ratio. For low Al/Ti ratios (i.e., 0.5 and 1), that is to say for high fraction of titanium, traces of a third phase are detected, corresponding the α 2 -Ti 3 Al titanium aluminide, a metastable phase with a theoretical heat of formation of − 26.461 kJ·mol −1 [27], whose formation is preferred to that of γ in rapid quenching [28] of melts or of plasma-sprayed micrometer-sized particles [29]. Evidence of the formation of this phase by reaction in between vapors of primary elements is reported by Luo et al [30].…”

Section: Titanium-aluminum Coatingsmentioning

confidence: 99%