Optimization of wettability and adhesion in reactive nickel-based alloys/alumina systems by a thermodynamic approach

Wan, Chuangeng; Kritsalis, P.; Drevet, B.; Eustathopoulos, N.

doi:10.1016/0921-5093(95)10020-2

Cited by 28 publications

(12 citation statements)

References 17 publications

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“…Some authors [12,13,[45][46][47] have reported a maximum in contact angle of Ni/Al 2 O 3 and Fe/Al 2 O 3 with oxygen. They had attributed the decrease of contact angle to lower oxygen partial pressures, to the increase in the aluminum dissolved in the metal.…”

Section: B Effect Of Dissolution Of Substratementioning

confidence: 99%

Controlled undercooling of liquid iron in contact with Al2O3 substrates under varying oxygen partial pressures

Valdez

Uranga

Fuchigami

et al. 2006

Metall Mater Trans B

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The objective of this study was to determine the conditions under which alumina can act as a heterogeneous nucleant to initiate the solidification of undercooled liquid iron. The undercooling of a pure iron sessile droplet in contact with Al 2 O 3 substrates was measured under controlled oxygen partial pressures by observing droplet recalescence. The experimental results indicated that the undercooling of liquid iron, in contact with an Al 2 O 3 substrate, did not have a unique value, varied from 0°C to 290°C, and was significantly affected by the oxygen content of the gas phase and the degree of interaction between the oxide and the metal. Deep undercoolings are possible at low oxygen potentials, provided the oxygen potential is such that substantial substrate decomposition does not occur. The measured undercooling was a strong function of gas phase oxygen content and a maximum in undercooling of 290°C was measured at PO 2 5 10 À19 atm. The variation in undercooling was related to the wetting of the substrate by the liquid metal, where the deepest undercoolings occurred when the highest contact angle between the substrate and the liquid droplet was achieved.

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Section: B Effect Of Dissolution Of Substratementioning

confidence: 99%

Controlled undercooling of liquid iron in contact with Al2O3 substrates under varying oxygen partial pressures

Valdez

Uranga

Fuchigami

et al. 2006

Metall Mater Trans B

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“…This promotes the formation of compact sintered shell outside the alumina core and then the bonding properties between them can be improved significantly. Wan et al also claimed that the adhesion was enhanced at the interface of nickel‐based alloys and alumina by adding Ti into the systems . Zhang, et al used Ni–Cr/Ti foils as interlayers to fabricate alumina‐stainless steel brazing joint with high performance and found that there formed reaction zones in joint due to the diffusion of active elements Ni and Ti .…”

Section: Resultsmentioning

confidence: 99%

Preparation and Interface Investigation of Fe/Al₂O_3P Composite Activated by Ni and Ti

Tang

Gao

et al. 2016

Adv Eng Mater

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Ceramic particles preforms are synthesized by vacuum sintering reaction between Al 2 O 3 particles and active elements Ti and Ni. The surface of preforms sintered by Al 2 O 3 and Ti consists of blockshaped a-Ti and fibrous TiO. As the content of Ti in preforms increases, the compressive strength of preforms rises first and then falls and the porosity decreases gradually. The preforms sintered of Al 2 O 3 and Ni-Ti have much higher compressive strength, because of the compact sintered shell outside Al 2 O 3 and the sintered necks between particles. Then the preforms/high-Cr cast iron composite is fabricated by infiltration casting process. The three-body abrasive wear resistance of composite is over 12 times higher than Cr15, owing to the protection of extruded Al 2 O 3 and tightly bonded composite interface.

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“…Voytovych et al [22] pointed out that the Ti 4 Cu 2 O did not modify the wetting, but the Ti 3 Cu 3 O did in a CuAg-Ti/Al 2 O 3 system. Wan et al [27] reported that the reactant was Ti 2 O 3 in Ni-Ti/Al 2 O 3 system, TiO 1+x in (Ni-Fe-Cr)-Ti/Al 2 O 3 system and TiO 1Àx in (Ni-Fe-Cr)-Si-Ti/Al 2 O 3 system. The different results suggest that the interfacial chemistry is greatly correlated to the alloy system and test condition.…”

Section: Interfacial Chemistry and Microstructurementioning

confidence: 99%

Wetting and pressureless infiltration in the CuTi/Al2O3 system under poor vacuum

Sang

Weiler

Aulbach

2010

Ceramics International

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Optimization of wettability and adhesion in reactive nickel-based alloys/alumina systems by a thermodynamic approach

Cited by 28 publications

References 17 publications

Controlled undercooling of liquid iron in contact with Al2O3 substrates under varying oxygen partial pressures

Controlled undercooling of liquid iron in contact with Al2O3 substrates under varying oxygen partial pressures

Preparation and Interface Investigation of Fe/Al₂O_3P Composite Activated by Ni and Ti

Wetting and pressureless infiltration in the CuTi/Al2O3 system under poor vacuum

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Optimization of wettability and adhesion in reactive nickel-based alloys/alumina systems by a thermodynamic approach

Cited by 28 publications

References 17 publications

Controlled undercooling of liquid iron in contact with Al2O3 substrates under varying oxygen partial pressures

Controlled undercooling of liquid iron in contact with Al2O3 substrates under varying oxygen partial pressures

Preparation and Interface Investigation of Fe/Al2O3P Composite Activated by Ni and Ti

Wetting and pressureless infiltration in the CuTi/Al2O3 system under poor vacuum

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Preparation and Interface Investigation of Fe/Al₂O_3P Composite Activated by Ni and Ti