Patent ID: 7096922

Claim:
A copper casting mold arrangement for a continuous casting of-steel melts in a presence at least of one of zinc and sulfur, comprising: a mold with a diffusion barrier layer in a thermally most greatly stressed contact region with the steel melt, wherein the diffusion barrier layer includes a layer of at least one of carbides, nitrides and borides, wherein the diffusion barrier layer is based on at least one of titanium, aluminum and chromium, wherein the diffusion barrier layer comprises one of aluminum nitride (AIN), aluminum oxide (Al 2 O 3 ), chromium carbide (CrC), chromium nitride (CrN), titanium carbide (TiC), titanium nitride (TiN), titanium carbonitride (TiCN), titanium aluminum nitride (TiAIN) and titanium boride (TiB 2 ), and wherein the diffusion barrier comprises a layer of chromium nitride (CrN) directly on the copper casting mold arrangement, a layer of aluminum oxide (Al 2 O 3 ) over the layer of chromium nitride (CrN) and an outer layer of titanium nitride (TiN) over the layer of aluminum oxide (Al 2 3 ).