Wettability studies of reactive brazing alloys on CVD diamond plates

Palavra, A.; Fernandes, A.J.S.; Serra, C.; Costa, F.M.; Rocha, L. A.; Silva, Rui

doi:10.1016/s0925-9635(00)00397-6

Cited by 26 publications

(11 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This paper reports the modification of the wetting characteristics of lasertreated ceramic surfaces by considering the effects of surface roughness. The importance of surface roughness on wetting characteristics has been reported in numerous publications [3][4][5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 95%

See 1 more Smart Citation

The effects of laser-induced modification of surface roughness of Al2O3-based ceramics on fluid contact angle

Triantafyllidis

Stott

2005

Materials Science and Engineering: A

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 95%

“…An increase in surface roughness increases the wettability of a surface [3][4][5][6][7][8][9][10]. To enhance corrosion resistance, hydrophobic surfaces are desirable.…”

Section: Introductionmentioning

confidence: 99%

The effects of laser-induced modification of surface roughness of Al2O3-based ceramics on fluid contact angle

Triantafyllidis

Stott

2005

Materials Science and Engineering: A

View full text Add to dashboard Cite

“…The active metals are expected to enhance the interfacial bonding strength by developing an intermediate carbide layer that alleviates the interfacial stresses arising from the difference in bond type and lattice parameter, and the phase change of the brazing alloy subsequent to brazing operation ( Ref 1,3). Table 1 shows the brazing temperatures of various Ni-, Cu-, and Ag-based alloys, which were used to braze diamond ( Ref 1,2,[4][5][6][7][8][9][10][11][12]. The Ni-based alloys are mainly composed of a large quantity of Cr as the active metal and B or P as the melting temperature depressor ( Ref 13).…”

Section: Introductionmentioning

confidence: 99%

Interfacial Bonding Strength Between Brazing Alloys and CVD Diamond

Hsieh

Lin

2009

J. of Materi Eng and Perform

View full text Add to dashboard Cite

Three groups of brazing alloys were compared in brazing chemical-vapor-deposited (CVD) diamond, including two nickel-based alloys (Ni-3Fe-7Cr-3B-0.5Si-0.02C and Ni-14Cr-10P-0.02C), one copper-based alloy (Cu-10Sn-15Ti), and two silver-based alloys (Ag-5Cu-1Al-1.25Ti and Ag-34.25Cu-1In-1.75Ti). The nickel-based alloys catalytically transformed the sp 3 -bonded diamond into sp 2 -bonded carbon during hightemperature brazing operation though with the existence of Cr as the active metal. The bonding strength was very low and the fracture primarily propagated through the sp 2 -bonded carbon. For Cu-10Sn-15Ti brazing alloy, the transformation of the sp 3 -bonded diamond into sp 2 -bonded carbon during hightemperature brazing operation was marginal. The bond strength was adequate and fracture took place primarily through the brazing alloy bulk, due to the high concentrations of Sn and Ti that caused the precipitation of abundant intermetallic compounds in the brazing alloy bulk. For Ag-based alloys having very low concentrations of Ti, no visible degradation of diamond was observed and the bonding strength was very high. Crack primarily propagated through the brazed interface or even the CVD diamond bulk.

show abstract

“…The catalytic effect of the cobalt binder on sintered WC-Co has a detrimental effect on the growth of diamond films, favoring the formation of graphite or non-diamond phase carbon. Various approaches can be employed to avoid the negative influence of cobalt on mechanical tools, including chemical etching of the Co surface [3][4][5][6], forming stable Co compounds [7,8], and depositing a protective layer on the substrate [9][10][11][12][13][14][15]. Those surface modification methods improve the adhesion of diamond film by removing most of the cobalt from the surface of the substrate with a diluted acid solution.…”

Section: Introductionmentioning

confidence: 99%