The result is Australia's best at the World Championships since the 1990's, when the men's relay team, featuring Olympic champion Steven Bradbury, had a number of top-five finishes.
Corey started the 1500m event in great form, winning his opening quarter final heat to advance direct into the semi-finals.
In the semi-final, Corey grabbed second place in a tight finish to make it through to his first ever World Championship A-final. Up against a field of eight skaters, Corey finished in sixth place setting a new personal best.
On the final day of competition, Corey continued his strong skating into the 1000m reaching the semi-final for the second time in Seoul. With a spot in the A-Final on the line, Corey narrowly missed out finishing in third place, putting him in the B-Final.
In the B-Final, Corey crossed the line in third, giving him his second top-10 for the World Championships in eighth place.
Corey also competed in the 500m, his third distance at the World Championships, placing 26th.
Brendan Corey (left) in action in the 1000m B-Final
Photo: Chung Sung-Jun/ISU