Performance evaluation of PVD coatings for high pressure die casting

Evaluation of Heat Checking and Washout of Heat Resistant Superalloys and Coatings for Die inserts

“…In CAE, the intermetallic layer is fully damaged by molten aluminum jet stream, thus thick intermetallic layers cannot survive. If CAE occurs, plastic depression/ deformation should be found in the impinging area of die surface [20].…”

“…When the molten aluminum comes in contact with die surface, mechanical interlocking due to surface roughness can also result in aluminum buildup on the die surface [20]. The buildup of aluminum alloy that occurs at the interface is called soldering.…”

“…This high sensitivity method allows erosion damage evaluation after a relatively small number of shots. Additional parameters were chosen to evaluate the soldering resistance: The literature reports [19,20,25,26,28], two parameters as often used for this purpose:…”

Development of Nitrided Selective Wave Soldering Tool with Enhanced Lifetime for the Automotive Industry

“…According to GD-OES examinations, nitrides of alloying elements such as Cr, Si and Mn formed during the oxide-free nitriding at the surface of the W302 alloy. It is well known that CrN is non-wettable for most metal melts, and, because of this character, it is used as non-wetting coating in soldering and aluminum casting processes [13][14][15]. It was deduced that the poor wetting of molten SAC 305 alloy on the nitrided W302 alloy was due to the presence of non-wetting compounds on the surface during nitriding.…”

Improvement of Corrosion Resistance and Structural Change in 304 Stainless Steel by means of Ion-Mixing

“…Many methods have been used for improving material surface properties such as ion-implantation, 1) laser heating 2) and other surface coatings. High-energy ion-beam implantation enables to add various solutes with non-equilibrium concentration in sub-micron surface area.…”