Particulate metal alloy coating for providing corrosion protection

The method of preparing a corrosion-resistant coated substrate protected with a corrosion-resistant coating, which method comprises:

• (1) applying to said substrate a coating composition comprising:
• (A) liquid medium;
• and
• (B) zinc alloy in flake form comprising greater than 50 weight percent zinc in said alloy flake and a balance of less than 50 weight percent of non-zinc alloy metal;
• and
• (2) curing applied coating composition on said substrate.

A coated substrate protected with a chrome-free, corrosion-resistant coating from a composition comprising:

• (A) liquid medium;
• (B) zinc alloy in flake form comprising greater than 50 weight percent zinc in said alloy flake and a balance of less than 50 weight percent of non-zinc alloy metal;
• and
• (C) silane binding agent.

The method of preparing a corrosion-resistant coated substrate protected with a chrome-free, corrosion-resistant coating, which method comprises:

• (1) applying to said substrate a coating composition comprising:
• (A) liquid medium;
• (B) zinc alloy in flake form comprising greater than 50 weight percent zinc in said alloy flake and a balance of less than 50 weight percent of non-zinc alloy metal;
• and
• (C) silane binding agent;
• with said coating composition being applied in an amount sufficient to provide, upon curing, above about 500 but not substantially above about 9,000 mg/ft2 of coating on said metal substrate;
• and
• (2) heat curing applied coating composition on said substrate at a temperature up to about 700° F. for a time of at least about 10 minutes.

A coated substrate protected with a corrosion-resistant coating from a coating composition comprising:

• (A) liquid medium;
• (B) zinc alloy in flake form comprising greater than 50 weight percent zinc in said alloy flake and a balance of less than 50 weight percent of non-zinc alloy metal;
• and
• (C) a hexavalent-chromium-providing substance.

The method of preparing a corrosion-resistant coated substrate protected with a chrome-free, corrosion-resistant coating, which method comprises:

• (1) applying a coating composition comprising
• (A) liquid medium;
• (B) zinc alloy in flake form comprising greater than 50 weight percent zinc in said alloy flake and a balance of less than 50 weight percent of non-zinc alloy metal;
• and
• (C) a hexavalent-chromium-providing substance;
• with said coating composition being applied in an amount sufficient to provide, upon curing, above about 500 but not substantially above about 9,000 mg/ft2 of coating on said coated substrate;
• and,
• (2) heat curing applied coating composition on said substrate at a temperature up to about 700° F. for a time of at least about 10 minutes.

A coated substrate protected with a chrome-free, corrosion-resistant coating from a coating composition comprising:

• (A) zinc alloy in flake form comprising greater than 50 weight percent zinc in said alloy flake and a balance of less than 50 weight percent of non-zinc alloy metal;
• (B) a titanate polymer;
• and
• (C) a liquid vehicle comprising organic liquid for said titanate polymer.

The method of preparing a corrosion-resistant coated substrate protected with a chrome-free, corrosion-resistant coating, which method comprises:

• (1) applying a coating composition comprising:
• (A) zinc alloy in flake form comprising greater than 50 weight percent zinc in said alloy flake and a balance of less than 50 weight percent of non-zinc alloy metal;
• (B) a titanate polymer;
• and
• (C) a liquid vehicle comprising organic liquid for said titanate polymer;
• and
• (2) heat curing applied coating composition on said substrate at a temperature up to about 600° F. for a time of at least about 10 minutes.

A coated substrate protected with a corrosion-resistant coating from a coating composition comprising:

• (A) liquid medium;
• (B) zinc alloy in flake form comprising greater than 50 weight percent zinc in said alloy flake and a balance of less than 50 weight percent of non-zinc alloy metal;
• and
• (C) one or more of a water-soluble and water dispersible silica substance.

The method of preparing a coated substrate protected with a corrosion-resistant coating, which method comprises:

• (1) applying a coating composition comprising:
• (A) liquid medium;
• (B) zinc alloy in flake form comprising greater than 50 weight percent zinc in said alloy flake and a balance of less than 50 weight percent of non-zinc alloy metal;
• and
• (C) one or more of a water-soluble and water dispersible silica substance;
• and
• (2) heat curing applied coating composition on said substrate at a temperature up to about 700° F. for a time of at least about 10 minutes.