Improved laser ablation technique

Lin Li; QinetiQ Ltd; Gareth Littlewood; Zhu Liu; Charles Malcolm Ward-close

Improved laser ablation technique

Lin Li (Other), QinetiQ Ltd (Other), Gareth Littlewood (Other), Zhu Liu (Other), Charles Malcolm Ward-close (Other)

Mechanical and Aerospace Engineering

Research output: Patent

Abstract

A method of manufacturing a shaped part, the method comprising: (I) providing a partially consolidated porous part that has been made from a powder; (II) permeating the porous part with a volatile liquid (e.g. water, ethanol), so that the liquid is present in the pores of the porous part; and (V) forming the shaped part by applying a laser beam to a spot on the surface of the liquid-permeated part to cause the volatile liquid to heat in the spot region, causing the powder particles to separate in the spot region, so that a portion of the part is ablated in the spot region. The porous part may be made from metallic or ceramic powder and has been partially consolidated for integrity, but is ablated by this lower energy, liquid-assisted laser process, prior to further strengthening. The method allows bespoke, complex shaped parts such as aerospace parts or medical implants to be made inexpensively, especially shaped titanium parts.

Original language	English
Patent number	WO/2010/055277
Publication status	Published - 20 May 2010

Keywords

laser, machining, sintered, porous, metal, Ti, ceramic, water

LPRC: Laser Processing Research Centre Impact
Allegre, O. (PI), Crosby, D. (PI), Domingos, M. (PI), Francis, J. (PI), Gillen, D. (PI), Guo, W. (PI), Li, L. (PI), Mativenga, P. (PI), Rogers, B. D. (PI), Whitehead, D. (PI), Wilson, D. (PI), Zhong, S. (PI), Mirhosseini, N. (Researcher), Ouyang, J. (Researcher), Huang, Y. (Researcher), Wei, C. (Researcher), Cheng, D. (PGR student), Suryo Pratomo, E. (PGR student), Zhang, Z. (PGR student), Li, Z. (PGR student), Mo, H. (PGR student), Zhu, M. (PGR student), Li, Q. (PGR student), Liu, W. (PGR student), Wang, L. (PGR student), Guo, H. (PGR student), Heinemann, R. (PI) & Liu, Z. (PI)
1/04/00 → …
Project: Research

Cite this

@misc{20b9ea5e483d44d29558e5ff234a5462,

title = "Improved laser ablation technique",

abstract = "A method of manufacturing a shaped part, the method comprising: (I) providing a partially consolidated porous part that has been made from a powder; (II) permeating the porous part with a volatile liquid (e.g. water, ethanol), so that the liquid is present in the pores of the porous part; and (V) forming the shaped part by applying a laser beam to a spot on the surface of the liquid-permeated part to cause the volatile liquid to heat in the spot region, causing the powder particles to separate in the spot region, so that a portion of the part is ablated in the spot region. The porous part may be made from metallic or ceramic powder and has been partially consolidated for integrity, but is ablated by this lower energy, liquid-assisted laser process, prior to further strengthening. The method allows bespoke, complex shaped parts such as aerospace parts or medical implants to be made inexpensively, especially shaped titanium parts.",

keywords = "laser, machining, sintered, porous, metal, Ti, ceramic, water",

author = "Lin Li and QinetiQ Ltd and Gareth Littlewood and Zhu Liu and Ward-close, {Charles Malcolm}",

note = "Issuing organisation: WIPO- World Intellectual Property OrganizationPublished source: WIPO- World Intellectual Property Organization; WO/2010/055277",

year = "2010",

month = may,

day = "20",

language = "English",

type = "Patent",

}

TY - PAT

T1 - Improved laser ablation technique

A2 - Li, Lin

A2 - Ltd, QinetiQ

A2 - Littlewood, Gareth

A2 - Liu, Zhu

A2 - Ward-close, Charles Malcolm

N1 - Issuing organisation: WIPO- World Intellectual Property OrganizationPublished source: WIPO- World Intellectual Property Organization

PY - 2010/5/20

Y1 - 2010/5/20

N2 - A method of manufacturing a shaped part, the method comprising: (I) providing a partially consolidated porous part that has been made from a powder; (II) permeating the porous part with a volatile liquid (e.g. water, ethanol), so that the liquid is present in the pores of the porous part; and (V) forming the shaped part by applying a laser beam to a spot on the surface of the liquid-permeated part to cause the volatile liquid to heat in the spot region, causing the powder particles to separate in the spot region, so that a portion of the part is ablated in the spot region. The porous part may be made from metallic or ceramic powder and has been partially consolidated for integrity, but is ablated by this lower energy, liquid-assisted laser process, prior to further strengthening. The method allows bespoke, complex shaped parts such as aerospace parts or medical implants to be made inexpensively, especially shaped titanium parts.

AB - A method of manufacturing a shaped part, the method comprising: (I) providing a partially consolidated porous part that has been made from a powder; (II) permeating the porous part with a volatile liquid (e.g. water, ethanol), so that the liquid is present in the pores of the porous part; and (V) forming the shaped part by applying a laser beam to a spot on the surface of the liquid-permeated part to cause the volatile liquid to heat in the spot region, causing the powder particles to separate in the spot region, so that a portion of the part is ablated in the spot region. The porous part may be made from metallic or ceramic powder and has been partially consolidated for integrity, but is ablated by this lower energy, liquid-assisted laser process, prior to further strengthening. The method allows bespoke, complex shaped parts such as aerospace parts or medical implants to be made inexpensively, especially shaped titanium parts.

KW - laser, machining, sintered, porous, metal, Ti, ceramic, water

M3 - Patent

M1 - WO/2010/055277

ER -

Improved laser ablation technique

Abstract

Keywords

Fingerprint

Projects

LPRC: Laser Processing Research Centre Impact

Cite this