Removable abradable seal carriers for sealing between rotary and stationary turbine components

A turbine comprising:

• a stationary component and a rotary component,
• said stationary component including a diaphragm having an annular array of stator vanes about the turbine axis, said diaphragm including a seal carrier removably carried by said diaphragm, said seal carrier having a seal face in opposition to seal teeth carried by said rotary component, said seal face being formed of an abradable material enabling said rotary component to abrade material from said seal face when sealing between said rotary and stationary components,
• said diaphragm including a second seal face carried by said seal carrier along a generally axially facing surface thereof and in opposition to a seal surface carried by said diaphragm, said seal carrier being movable generally axially relative to said diaphragm to form a seal between said seal surface and said second seal face, one of said second seal face and said seal surface carrying an abradable material enabling another of said second seal face and said seal surface to abrade said material when sealing between said seal carrier and said diaphragm.