Materiały KOMPOZYTowe Część I ^

Materiały KOMPOZYTowe Część II ^

Materiały KOMPOZYTowe Część III ^

 .

 

4. Materiały gradientowe

Część IV

 

*       Graded Tribological Materials:

 

*         Publikacje o materiałach gradientowych Functionally Gradient Materials (Lista 5. publikacji)

*         Gradient Alumina-Aluminide Alloys (3A):

thermal barrier heating elements cutting tools

1) dry-pressing > Graded 3A-Materials made by dry-pressing of the precursor powder:

dry-pressing                      

30 vol.% Ti-aluminide/20 vol.% Ti-aluminide/10 vol.% Ti-aluminide

2) dip-coating > Graded 3A-Materials made by dip-coating of a porous alumina:

Functionally Graded Al2O3-Aluminide Materials

dip-coating  

30 vol.% Fe-aluminide/ 20 vol.% Fe-aluminide/ 10 vol.% Fe-aluminide

3) slip-casting > Graded 3A-Materials made by slip-casting:

Slip-casting              

 

*       Determination of a casting technique for the production of metallic materials with gradient structure-Aachen:

           
Fig. 1: Cast structure with a continuous Si-concentration gradient between the plate and trapezoid

 

*       TECHNOLOGIE WARSTW WIERZCHNICH (powłoki warstwowe i gradientowe)–RADOM:

powłoki proste: TiN, CrN, ZrN,

powłoki złożone: wieloskładnikowe - Ti(C,N), (Ti,Al)N, (Ti,Zr)N, (Ti,Cr)N,

wielowarstwowe i gradientowe – TiN/Ti(CxN1-x)

 

*       Interfaces between metals/ceramics: high power lasers:

Surface composite and functionally gradient materials with lasers,Y.T. Pei,J.Th.M. De Hosson

        

Laser cladding of FGCs with dynamic powder feeding technology (a) and the sample of single track FGCs (b).

 

*       Laser-Powder Cladding - JOM (Y.T. PeiJ.Th.M. De Hosson, Producing Functionally Graded Coatings by Laser-Powder Cladding, JOM,  52 (1) (2000)

The term "functionally graded materials" (FGMs) is now widely used by the materials community for a class of materials exhibiting spatially inhomogeneous microstructures and properties.
  

The top (a) intermediate (b), and bottom (c) of a graded microstructure of Al-40Si FGC produced at 3,000 W laser power and 26.7 mm/s beam speed. The arrows indicate five-branch silicon particles.

The temperature field of the laser pool in the case of cladding Al-40Si FGCs. Isotherms I1 and I2 represent the liquidus of Al-40Si alloy and the Al/Si eutectic temperature, respectively; Vb is the beam scanning speed; and Vs is the speed of eutectic growth front.

        

The hardness distribution of laser-clad Al-40Si FGCs produced with different powder feeding rates ^

 

 

 

Materiały KOMPOZYTowe Część I ^

Materiały KOMPOZYTowe Część II ^

Materiały KOMPOZYTowe Część III ^

 

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Aktualizowano: 2003-04-16