Rubens Barrichello has threatened to quit Formula One if he senses team orders coming into play in his fight for the title with team-mate Jenson Button.

For the fourth time in five races this season, Somerset's Button stood on the top step of the podium, spearheading a Brawn GP one-two at the Spanish Grand Prix.

It was the ninth successive race a driver has won from pole at the Circuit de Catalunya in Barcelona, although this was no routine run from start to finish as in the past.

Instead, there was an undercurrent of discontent from Barrichello at the prospect Button had been favoured ahead of himself.

After being passed by third-on-the-grid Barrichello on the run down to the first corner, Button then spent the first 18 laps behind the Brazilian.

When he pitted, he had been informed by his team the lap previously that he was being switched from a three-stop to a two-stop strategy as boss Ross Brawn attempted to cover all bases.

There was no such call for veteran Barrichello, who remained on a three-stop plan, which cost him the victory.

Technical guru Brawn, who made the call to change Button's tactics, claims Barrichello lost out due to a third set of soft tyres that strangely lacked the pace of the previous two.

The 36-year-old Brazilian, though, was clearly sore at what had unfolded as he said: "I hope the guys come back and tell me there was a small problem somewhere.

"We were both on three stops, then they changed the strategy for him, which is good for him, and good for the team. We were one and two, but I'd like to understand why we changed that (the strategy).

"We'll have a meeting, and then we'll have some answers."

In light of Barrichello's experiences at Ferrari where he was clearly a No 2 driver and forced to bow to team orders, the Brazilian then definitively outlined his position.

"If I get a whiff of team orders I will hang up my helmet on the spot," asserted Barrichello.

"I'm very experienced and if that happens I won't follow any team orders any more. I'm making it clear now so everybody knows."

Despite the problems he endured at Ferrari, Barrichello maintains the culture within Brawn is far different.

"We've a much more friendly situation, so I'm not blaming this or that, and there's no way I'm going to cry and say I should have done this or that," insisted Barrichello.

"It's in my own best interests to learn what went wrong because I have the ability to have won the race, but I didn't.

"Jenson is on a flier, is doing very well, and obviously there's a bit more pressure on my side because he has won four races and I've won nothing.

Button, and in particular Brawn, both fervently dismissed the idea team orders had come into play.

"We both work closely together, and there's a very good atmosphere," insisted Button. "We're all here to win – it went my way here, and it may go his (Barrichello's) way in Monaco. That's the way it is.

"He had a problem on his stint, I didn't, I made it work and I won the race, but then it could swing around at the next one.

"That's the way we go racing, the way it should be, and the way it has been for most teams in Formula One."

FIA Formula 1 Spanish Grand Prix, Barcelona

Final Positions: 1 Jenson Button (Gbr), Brawn GP 1hr 37mins 19.202secs, 2 Rubens Barrichello (Bra) Brawn GP 1:37:32.258, 3 Mark Webber (Aus) Red Bull 1:37:33.126, 4 Sebastian Vettel (Ger) Red Bull 1:37:38.143, 5 Fernando Alonso (Spa) Renault 1:38:02.368, 6 Felipe Massa (Bra) Ferrari 1:38:10.029, 7 Nick Heidfeld (Ger) BMW Sauber 1:38:11.514, 8 Nico Rosberg (Ger) Williams 1:38:24.413, 9 Lewis Hamilton (Gbr) McLaren at 1 Lap, 10 Timo Glock (Ger) Toyota at 1 Lap, 11 Robert Kubica (Pol) BMW Sauber at 1 Lap, 12 Nelson Piquet Jr (Bra) Renault at 1 Lap, 13 Kazuki Nakajima (Jpn) Williams at 1 Lap, 14 Giancarlo Fisichella (Ita) Force India at 1 Lap. Not Classified: 15 Kimi Raikkonen (Fin) Ferrari 17 Laps completed, 16 Heikki Kovalainen (Fin) McLaren 7 Laps completed, 17 Jarno Trulli (Ita) Toyota 0 Laps completed, 18 Sebastien Buemi (Swi) Scuderia Toro Rosso 0 Laps completed, 19 Sebastien Bourdais (Fra) Scuderia Toro Rosso 0 Laps completed, 20 Adrian Sutil (Ger) Force India 0 Laps completed