Planetary Grinding Mill & Applications for Milled Powderperpetualtech.ca/pdf/PGM_processing_of... · werkzn Tel: (514) 240-7932; Fax: (514) 762-9022; email: [email protected]

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Tel: (514) 240-7932; Fax: (514) 762-9022; email: [email protected]

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Planetary Grinding Mill &

Applications for Milled

Powder

George E. Kim

Supported by United States Office of Naval Research (Contract no. N00014-03-10146)

Dr. Lawrence T. Kabacoff – Program Officer

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“Objective is to develop an economical and scaleable means of producing

nanostructured and/or nanosized powder using an advanced Planetary Grinding Mill

technology”

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Characteristics:

• continuous feed;

• high energy;

• low wall contamination due to little movement of media

w.r.t. chamber wall;

• very rapid size reduction and dispersion;

• good efficiency; and

• grinds metals (Inconels), ceramics (oxides, carbides),

intermetallics (MoSi2), and polymers (acrylics, vinyl,

polyesters) to submicron or nano particle size range.

Schematic of

PGM System

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Photograph of

PGM System

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POTENTIAL APPLICATIONS FOR PGM MILLED POWDERS

• stronger and/or lighter Al alloy

components via multi-scale structure

• superior TBC performance via nanostructured MCrAlY

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PRELIMINARY RESULTS USING OUR

PGM SYSTEM

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nwerkz nwerkz nwerkz nwerkz nwerkzNiCrAlY Powder

original powder (spherical atomized powder)

prorietary milling

without LN2 (started to

form equiaxed particles that

can be produced at much lower

cost and faster rate than via

cryomilling)

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0

200

400

600

800

1000

1200

1400

35 45 55 65 75 85

Ni 343: as-received

30 min

90 min

Summary:

• novel approach of using high energy mill technology looks

to be promising for the production of NiCrAlY powder with

fine grain size and equiaxed morphology

• need to further optimize milling prior to thermal spraying

and testing in TBC

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nwerkz nwerkz nwerkz nwerkz nwerkz5083 Al Powder

original powder (spherical atomized powder)

Note: micrograph from similar powder used by UC, Davis

proprietary milling

without LN2 (uniform equiaxed

particles that can be produced at much

lower cost and faster rate than via

cryomilling)

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Summary:

• novel approach of using high energy mill technology has

produced Al5083 powder with fine grain size and equiaxed

morphology

• bulk samples will be formed and mechanical testing carried

out

• novel approach is cheaper and faster in producing fine-

grained particles, as compared to cryomilling

0

1000

2000

3000

4000

5000

6000

7000

30 40 50 60 70 80 90

2 theta

CP

S

Conv.

cryo

T7

T9

T11 Dry milling

Documents

Planetary Grinding Mill & Applications for Milled Powderperpetualtech.ca/pdf/PGM_processing_of... · werkzn Tel: (514) 240-7932; Fax: (514) 762-9022; email: [email protected]