An expanding metal sealant for use with multilateral completion systems

A multilateral completion system comprising:

• a well casing or tubing;
• a lateral component in fluid communication with the well casing;
• a metal sealant applied to the lateral component;
• wherein the metal sealant is configured to change radial dimension in response to hydrolysis;
• wherein the lateral component and metal sealant are configured to form a seal or an anchor with a well casing or tubing of the multilateral completion system in response to hydrolysis.

A method of using a junction within a multilateral completion system, the method comprising:

• applying a metal sealant to a lateral component;
• positioning the lateral component in fluid communication with a well casing;
• wherein the metal sealant is configured to change radial dimension in response to hydrolysis;
• wherein the lateral component and metal sealant form a seal and an anchor with a well casing or tubing of the multilateral completion system in response to hydrolysis.