Semi-reflective glazing comprising a nickel-chromium-molybdenum alloy anchoring layer

DETAILED DESCRIPTION The present invention overcomes the drawbacks that are noted above concerning the corrosion of the evaporation crucibles by providing alloy materials for making the anchoring layers of semi-reflective coatings.
The use of applicant's alloy materials has been found to cause little or no corrosion of the evaporation crucibles and to also at the same time yield an anchoring layer having excellent properties contributing to superior semi-reflective glasses.
Applicant's alloy materials can also be evaporated in much larger amounts and at a faster rate than has heretofore been possible with the conventional materials of anchoring layers, and without causing the failure of the evaporation crucibles.
Applicant has discovered that all of the objects of this invention may be realized by a process for making a semi-reflective metallized glass containing an anchoring layer, said anchoring layer being deposited by means of vacuum evaporation from an alloy computing nickel in an amount of from about 40-70% by weight, chromium in an amount of from about 5-31% by weight, and molybdenum in an amount of from about 3-28% by weight.
The anchoring layer may also be deposited from an alloy of nickel, chromium, molybdenum and at least one metal selected from the group of tungsten, iron and cobalt, in an amount of from about 55-75% by weight of nickel, iron and cobalt, from about 5-31% by weight of chromium, and from about 3-28% by weight of molybdenum and tungsten.